Offshore Installation Manager (OIM) Practice Test

The person in charge of an offshore drilling rig of any type, floating or jack-up. Stability questions built on the NMC sample rigs (DEEP DRILLER, COASTAL DRILLER) need their reference book, so they are left out here. Coast Guard exam code MODU01.

124 real questions from the Coast Guard National Maritime Center's public sample exams, free. Rules of the Road needs 90%. Every other module needs 70%.

Passing score: Coast Guard pass marks module by module, and the retest rules

What's free: daily rounds, the Brig, the drills and the Pass Meter, for every license. Your first module test is free too. After that, the full Exam Room is $19, once. No subscription.

What's on the test

10 sample questions

1. For the purpose of the Inland Navigation Rules, the term "Inland Waters" includes which of the following?

   • A.The coastline of the United States out to one mile offshore
   • B.The Great Lakes on the United States side of the boundary
   • C.The waters surrounding any islands of the U.S.
   • D.Any lakes within state boundaries
   Show answer

   B. The Great Lakes on the United States side of the boundary

   Q100, Rules of the Road: International & Inland

2. What shall be conducted during a fire and boat drill?

   • A.All watertight doors in the vicinity of the drill shall be operated.
   • B.Fire pumps shall be started and all exterior outlets opened.
   • C.All lifeboat equipment shall be examined.
   • D.All of the above
   Show answer

   A. All watertight doors in the vicinity of the drill shall be operated.

   Q352, Navigation & Deck General / Safety

3. The prohibition against exceeding the load line draft may be considered temporarily not applicable when __________.

   • A.column-stabilized units are operating in water depths over 600 feet
   • B.bottom supported units are being raised or lowered to the sea bed
   • C.column-stabilized units are operating in waters outside U.S. jurisdiction
   • D.bottom supported units are being towed on a move of less than 12 hours
   Show answer

   B. bottom supported units are being raised or lowered to the sea bed

   Q430, OIM Deck General / Safety

4. A law enforcement vessel patrolling a marine regatta may exhibit a flashing blue light or which of the following alternates?

   • A.two amber lights in a horizontal line
   • B.a fixed green light over a red flashing light
   • C.a high intensity flashing white light (strobe)
   • D.an alternately flashing red and yellow light
   Show answer

   D. an alternately flashing red and yellow light

   Q100, Rules of the Road: International & Inland

5. Which is TRUE concerning air masses near the earth's surface?

   • A.They are not deflected by the earth's rotation
   • B.They move from areas of high pressure to areas of low pressure
   • C.Air masses are not affected by the earth's gravity
   • D.In North America the air masses move from east to west
   Show answer

   B. They move from areas of high pressure to areas of low pressure

   Q357, Navigation General: Great Lakes & Inland

6. If H2S exposure is anticipated, fixed monitoring devices aboard a MODU should have a low-level concentration alarm to alert personnel. at what concentration level will the alarm activate?

   • A.10 PPM
   • B.20 PPM
   • C.30 PPM
   • D.40 PPM
   Show answer

   A. 10 PPM

   Q431, OIM Unrestricted

7. A commercial vessel engaged in public safety activities may display a(n) identity light(s). Which of the following is appropriate for these activities?

   • A.alternately flashing red and yellow light
   • B.flashing yellow light
   • C.alternately flashing blue and red light
   • D.flashing blue light
   Show answer

   A. alternately flashing red and yellow light

   Q100, Rules of the Road: International & Inland

8. When a rescue vessel approaches a survival craft in heavy seas, which action should the person in charge of the survival craft take?

   • A.Transfer only those personnel who are not seasick
   • B.Tie up to the rescue vessel
   • C.Transfer all personnel immediately
   • D.Wait for calmer weather before transferring personnel
   Show answer

   D. Wait for calmer weather before transferring personnel

   Q411, Towing Deck Safety (Oceans/Near Coastal)

9. What is a pinion in a jacking system?

   • A.Gearwheel
   • B.Flexible shaft
   • C.Flexible coupling
   • D.Flexible joint
   Show answer

   A. Gearwheel

   Q431, OIM Unrestricted

10. What is a "vessel restricted in her ability to maneuver"?

    • A.A large tanker that is being towed as a dead ship to dry dock
    • B.A deep-draft vessel that can only navigate in a dredged channel
    • C.A vessel fishing with a bottom trawl that must remain on course
    • D.A vessel laying revetment mats to provide bank protection along a channel
    Show answer

    D. A vessel laying revetment mats to provide bank protection along a channel

    Q100, Rules of the Road: International & Inland

What the study guide does

• Short daily rounds of 10 questions, with a streak.
• Practice tests built like the real one, scored with the real pass marks (first one free, then $19 once for the full Exam Room).
• The Brig: questions you miss come back until you get them right twice.
• Pass Meter: your chance of passing every module if you sat it today, worked out from your own answers.
• Lights, shapes and sound signal drills (Rules 21-35).